Fix various warnings

cli/src/main.rs

@@ -39,7 +39,7 @@ use {
 /// Create a new server, bind it to an address, and serve responses until an error occurs.
 pub async fn serve(serve_args: ServeArgs) -> Result<(), Error> {
     // Load the wasm module into an execution context
-    let ctx = create_execution_context(&serve_args.shared(), true).await?;
+    let ctx = create_execution_context(serve_args.shared(), true).await?;
 
     let addr = serve_args.addr();
     ViceroyService::new(ctx).serve(addr).await?;
@@ -85,7 +85,7 @@ pub async fn main() -> ExitCode {
 /// Execute a Wasm program in the Viceroy environment.
 pub async fn run_wasm_main(run_args: RunArgs) -> Result<(), anyhow::Error> {
     // Load the wasm module into an execution context
-    let ctx = create_execution_context(&run_args.shared(), false).await?;
+    let ctx = create_execution_context(run_args.shared(), false).await?;
     let input = run_args.shared().input();
     let program_name = match input.file_stem() {
         Some(stem) => stem.to_string_lossy(),

cli/src/opts.rs

@@ -194,7 +194,7 @@ impl From<&ExperimentalModule> for ExperimentalModuleArg {
 /// [opts]: struct.Opts.html
 fn check_module(s: &str) -> Result<String, Error> {
     let path = PathBuf::from(s);
-    let contents = std::fs::read(&path)?;
+    let contents = std::fs::read(path)?;
     match wat::parse_bytes(&contents) {
         Ok(_) => Ok(s.to_string()),
         _ => Err(Error::FileFormat),

lib/src/config/geolocation.rs

@@ -208,7 +208,7 @@ impl GeolocationMapping {
     pub fn read_json_contents(
         file: &Path,
     ) -> Result<HashMap<IpAddr, GeolocationData>, GeolocationConfigError> {
-        let data = fs::read_to_string(&file).map_err(GeolocationConfigError::IoError)?;
+        let data = fs::read_to_string(file).map_err(GeolocationConfigError::IoError)?;
 
         // Deserialize the contents of the given JSON file.
         let json = match serde_json::from_str(&data)

lib/src/config/secret_store.rs

@@ -78,7 +78,7 @@ impl TryFrom<Table> for SecretStoreConfig {
                                 err: SecretStoreConfigError::FileNotAString(key.to_string()),
                             }
                         })?;
-                        fs::read(&path)
+                        fs::read(path)
                             .map_err(|e| FastlyConfigError::InvalidSecretStoreDefinition {
                                 name: store_name.to_string(),
                                 err: SecretStoreConfigError::IoError(e),

lib/src/execute.rs

@@ -353,7 +353,7 @@ impl ExecuteCtx {
 
         info!(
             "request completed using {} of WebAssembly heap",
-            bytesize::ByteSize::kib(heap_pages as u64 * 64)
+            bytesize::ByteSize::kib(heap_pages * 64)
         );
 
         info!("request completed in {:.0?}", request_duration);

lib/src/session.rs

@@ -890,7 +890,7 @@ impl<'session> SelectedTargets<'session> {
 
 impl<'session> Drop for SelectedTargets<'session> {
     fn drop(&mut self) {
-        let targets = std::mem::replace(&mut self.targets, Vec::new());
+        let targets = std::mem::take(&mut self.targets);
         self.session.reinsert_select_targets(targets);
     }
 }

lib/src/streaming_body.rs

@@ -37,12 +37,6 @@ pub enum StreamingBodyItem {
     Finished,
 }
 
-impl From<Chunk> for StreamingBodyItem {
-    fn from(chunk: Chunk) -> Self {
-        Self::Chunk(chunk)
-    }
-}
-
 impl StreamingBody {
     /// Create a new channel for streaming a body, returning write and read ends as a pair.
     pub fn new() -> (StreamingBody, mpsc::Receiver<StreamingBodyItem>) {
@@ -56,7 +50,7 @@ impl StreamingBody {
     /// sending, e.g. due to the receive end being closed.
     pub async fn send_chunk(&mut self, chunk: impl Into<Chunk>) -> Result<(), Error> {
         self.sender
-            .send(Chunk::from(chunk.into()).into())
+            .send(StreamingBodyItem::Chunk(chunk.into()))
             .await
             .map_err(|_| Error::StreamingChunkSend)
     }
@@ -78,9 +72,8 @@ impl StreamingBody {
                 // If the channel is full, maybe the other end is just taking a while to receive all
                 // the bytes. Spawn a task that will send a `finish` message as soon as there's room
                 // in the channel.
-                let sender = self.sender.clone();
                 tokio::task::spawn(async move {
-                    let _ = sender.send(StreamingBodyItem::Finished).await;
+                    let _ = self.sender.send(StreamingBodyItem::Finished).await;
                 });
                 Ok(())
             }

lib/src/wiggle_abi/req_impl.rs

@@ -596,9 +596,7 @@ impl FastlyHttpReq for Session {
         &mut self,
         pending_req_handle: PendingRequestHandle,
     ) -> Result<(u32, ResponseHandle, BodyHandle), Error> {
-        let handle: PendingRequestHandle = pending_req_handle.into();
-
-        if self.async_item_mut(handle.into())?.is_ready() {
+        if self.async_item_mut(pending_req_handle.into())?.is_ready() {
             let resp = self
                 .take_pending_request(pending_req_handle)?
                 .recv()

lib/src/wiggle_abi/secret_store_impl.rs

@@ -110,7 +110,7 @@ impl FastlySecretStore for Session {
             .as_array(plaintext_len)
             .as_slice_mut()?
             .ok_or(Error::SharedMemory)?;
-        plaintext_out.copy_from_slice(&plaintext);
+        plaintext_out.copy_from_slice(plaintext);
         nwritten_out.write(plaintext_len)?;
 
         Ok(())